Comparison between empirical forecast methods of resistance to advance and propulsive design of a container ship

Resumo

Estimating the resistance to advancement and the necessary power of ships ́ engines has a vital
importance in the design and construction of any marine vehicle. However, performing this task is not simple and
can be done by different methods. So far, the main ways of predicting ship dragging are restricted to computational
fluid dynamics methods (CFD), testing on ship models (small scale), and systematic series. The series, in turn, are
empirical approaches originating from tests performed systematically on model ships. In order to verify the
applicability of these series, this study presents a comparison between the approach proposed by Holtrop and
Mennen and the method proposed by Hollenbach. For this, a container ship was subjected to both methods and the
expected resistance values were compared. The second stage of this work consists of the optimization of the
propulsive system using the Microsoft Excel Solver tool, which allowed to find parameters in their ideal forms,
such as: propeller rotation and maximum propeller efficiency. The Wageningen B-Series propeller series was used
in this last stage.